Manley Stainless Exhaust Valve - 1.625 in Head - 5/16 in Valve Stem - 5.640 in Long - Small Block Chevy Crankcase Evacuation System The five bolt drive flanges

The five bolt drive flanges are machined from 7075-T6 alloy

Nuts / Washers

Purple / Zinc Oxide

Green Stuff 6000

Manley Stainless Exhaust Valve - 1.625 in Head - 5/16 in Valve Stem - 5.640 in Long - Small Block Chevy Crankcase Evacuation System The five bolt drive flangesManley Valve Exhaust, Valve S D 1. 625,+. 700. Product Description: Exhaust Valve 1. 625 in Head 5 16 in Valve Stem 5. 640 in Long Stainless Small Block Chevy Manley Performance high performance and racing engine parts have been powering winners since 1966! Manley Budget Replacement Valves are better than stock valves. Manley Budget Performance Valves are for the value conscious engine builder. Manley Street Master Valves are excellent for mild